oam/knowledge base/mount and use an encrypted device.md

Mount and use an encrypted device

Table of contents

1. TL:DR
2. Further readings
3. Sources

TL:DR

# Encrypt the device.
cryptsetup luksFormat '/dev/sda'

# Open the encrypted device.
# 'mapper_name' is any name you want. It will be used by the device mapper.
cryptsetup open '/dev/sda' 'mapper_name'

# Format the volume.
mkfs.btrfs -f --label 'label' '/dev/mapper/mapper_name'

# Mount the volume.
mkdir -p 'path/to/mount/point'
mount -t 'filesystem' -o 'mount,options' '/dev/mapper/mapper_name' 'path/to/mount/point'

# Do something.
btrfs subvolume create 'path/to/subvolume/in/mount/point'
chown 'user':'group' 'path/to/subvolume/in/mount/point'

# Umount the volume.
umount 'path/to/mount/point'

# Close the device.
cryptsetup close '/dev/mapper/mapper_name'

Further readings

Sources

All the references in the further readings section, plus the following:

• script: Create an encrypted BTRFS device
• script: Create an encrypted ZFS device